Fuel-feed system for motor vehicles



March 8,1927. E 1,619,809

R. F. BRACKE FUEL FEED SYSTEM FOR MOTOR VEHICLES Original Filed 'April15, 1923 nonnn'r r. nnaoxn, or cnrcnoo, ILLINOIS, ASSIGNOR 'ro CURTIS n.CAMP, 'rnus'rnn, i i or ennivcon, rumors. I

FUEL-FEED SYSTEM FOR MOTOR VEHICLES.

@riginal application filed April 13, 1923,

My invention relates to fuel feed systems for motor vehicles, and hasfor its general object the provision of improved means for lifting fuelfrom the fuel supply tank to a carburetor mounted above the tank.

This application is a divisional part of my co-pending application 1 forpatent on suction producing meansfor fuel feed systems, Serial No.631,822, filed April 13, 1923.

In the accompanying drawings:

Figure 1 is a side elevational View of an automobile chassis showing thesystem of my invention; I

Figure 2 is an end elevational view of the vortex ejector employed inthe system of my invention; I

Figure 3 1s a vertical cross sectional view taken along the line 33 ofFigure 2, lookingiinthe direction indicated by the arrows; an

Figure 4 is a fragmentary cross sectional view showing a modified formof ejector nozzle.

Similar characters of reference refer to similar parts through theseveral drawings.

Referring first to Figure 1, 5 designates an automobile frame, 6 anengine mounted therein, 7 the radiator and 8 the fuel supply tankmounted at the rear of the car and below the carburetor 9. Mounted abovethe' carburetor 9 is the usual form of vacuum feed tank 10 arranged todraw fuel from the tank 8 through the pipe 11, From the tank 10 the fuelis permitted to flow by gravity to the carburetor 9. All of theforegoing is well known construction and needs no further explanation.

My invention relates to the means for producing the suction or reductionin pres-' sure necessary In the operation of the As shown in Figures 2and Serial No. 631,822. Divided and this application filed October 222,1926. Serial No. 143,364.

engine is prevented. The presence of air in the engine jackets of awater-cooling system gives rise to rapid oxidation of the jacket wallsand, therefore, the accumulation of scale which. eventually clogs thesystem, should it find its wayto the radiator tubes. There is, also, thedisadvantage caused by the formation of air pockets and their tendencyto reduce the efficiency of the cooling system.

In the operation of the device, the cooling water is forced tangentiallyinto the chamber 14 and, because of the centrifugal force produced bythe vortex or whirlpool action of the water, produces a high suction atthe nozzle which is used to lift fuel as described.

In Figure 4 I have shown a modified form of nozzle 17' with suctionholes radiating from the center. j

Having thus described my invention, what ll claim isnew and desire tosecure by Letters Patent of the United States is:

1. A fuel feed system for motor vehicles, comprising in combination anengine, a carburetor therefor, a fuel feed tank mounted above thecarburetor and arranged to feed fuel thereto, a fuel supply tank belowthe carburetor and communicating with the feed tank, a water circulatingsystem for .the engine, and an ejector in the circulating system locatedso as to receive the water as it leaves the engine for producing asuction in the feed tank.

2. A fuel feed system for motor vehicles comprising an engine, acarburetor therefor, a vacuum feed tank mounted above the carburetor andarranged to feed fuel thereto. a supply tank-below the carburetor andcommunicating with the fuelfeed tank. a water circulating system for theengine including a vortex chamber arranged to receive the.

water as it leaves the engine, and a nozzle 1n the chamber connectedtothe fuel feed tank for the purpose of communicating a suction at thevortex to the fuel feed tank.

3. A fuel feed system for motor vehicles comprising 111 combination an acartil buretor therefor, a vacuum feed tank mounted above the carburetorand arranged to feed fuel thereto by gravity, a fuel supply tank belowthe carburetor and communicat- 5 ing with the feed tank, aWater-circulating system for the engine, and an ejector in thecirculating system located so as. to receive the water as it leaves theengine and connected with the fuel feed tank above the 'level of fueltherein for producing suction l I in said tank, whereby fuel is liftedfrom the main supply tank to the-vacuum feed tank.

In witness whereof, I hereunto subscribe my name this 19th day ofOctober, 1926.

ROBERT F. BRACKE.

